Can't detect AMD Radeon HD 6750M nor install drivers

[ministry]

Hello.



My laptop is HP Pavilion Dv6-6B15Ew (QH616EA).


It has 2 graphic cards.  Radeon HD 6520G (integrated) and Radeon HD 6750M (discrete).



A few days ago suddenly I wasn't able to play most of video games apart from the very old ones. I tried to reinstal Catalyst AMD drivers. When I tried to install driver instalation failed due to an error (connected to detectionmanager.dll).


Eventually I reinstalled windows7. I am still unable to install the (amd catalyst) drivers - the same error appears.


It seems something has happened to Radeon HD 6750M (discrete)


When I try to identify devices, I see
Device Name:
Video Controller (VGA Compatible) - for both of Radeons


However integrated Radeon HD 6520G appears to have normal Hardware  ID.


On the other hand Radeon HD 6750M (discrete) shows:



Device Name:
Video Controller (VGA Compatible)
Hardware ID:
PCI\VEN_1022&DEV_6741&SUBSYS_00000000&REV_00
PCI\VEN_1022&DEV_6741&SUBSYS_00000000
PCI\VEN_1022&DEV_6741&REV_00
PCI\VEN_1022&DEV_6741
PCI\VEN_1022&DEV_6741&CC_030000
PCI\VEN_1022&DEV_6741&CC_0300



Do you have any idea what could be wrong and/or how to fix it? Thanks in advance, I've already spent a few days trying to figure out this madness

[Jeet_singh]

Hi @ministry,

Thank you for visiting the HP Forums! A great place where you can find solutions for your issues with help from the community! I came across your post and wanted to assist you. I understand you are having issues installing the graphics drivers on your HP notebook. Don't worry we'll work together to find a solution for you.

Let's start off by performing an update on Bios, Chipset and graphics card drivers for your PC from our HP Support website, using this link.

Also, download and install HP support assistant on your PC. It should automatically download and install the latest updates and drivers for your PC.

Refer this link to know how to use HP support assistant.

If the issue persists, I would suggest you run the test on the video from PC-Doctor for Windows, for more please follow this link.

For additional information, please try these links here: 

HP Notebook PCs - Switchable Graphics on Notebooks Configured with Dual AMD GPUs (Note: On the bottom of the page, you have the overview of Switchable graphics of Dual GPUs as well as Switchable graphics on Notebooks Configured with Intel and ATI GPUs.

HP PCs - NVIDIA Optimus Graphics with Integrated Intel Graphics (Windows 10, 8, 7) (Though it is for NVIDIA, settings would be the same for AMD).

I hope this information helps. Let me know if you need any further assistance. I'll be more than happy to help.

Feel free to post your query for any other assistance as well,

It's been a pleasure interacting with you and I hope you have a good day ahead.

If you wish to show appreciation for my efforts,

mark my post as Accepted Solution.

And click on the Purple Thumbs up icon at the bottom of my comment.

Regards,